<template>
  <div class="comment-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入评论的内容,字数不得超过120" maxlength="120" v-model="msg"></textarea>
    <mt-button type="primary" size="large" @click='postComment'>发表评论</mt-button>
    <div class="cmt-list">
      <div class="cmt-item" v-for="(item,i) in comments" :key="item.i">
        <p
          class="cmt-title"
        >第{{i+1}}楼 &nbsp;&nbsp;用户:{{item.user_name}} &nbsp;&nbsp;发表时间:{{item.add_time |dateFormat('YYYY-MM-DD hh:mm:ss')}}</p>
        <div class="cmt-body">{{item.content==='undefind'? '此用户啥也没说':item.content}}</div>
      </div>
    </div>
    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>
<script>
import { Toast } from "mint-ui";
export default {
  data() {
    return {
      pageIndex: 1,
      comments: [],
      msg:''//评论内容

    };
  },
  created() {
    this.getComments();
  },
  methods: {
    getComments() {
      this.$http
        .get("api/getcomments/" + this.id + "?pageindex=" + this.pageIndex)
        .then(result => {
          console.log(result.body);
          if (result.body.status === 0) {
            //    this.comments=result.body.message
            //    this.comments=result.body.message
            this.comments = this.comments.concat(result.body.message);
          } else {
            Toast("获取失败");
          }
        });
    },
    getMore() {
      this.pageIndex++;
      this.getComments();
    },
    postComment(){
      //是否为空
      if(this.msg.trim().length===0){
        return Toast('评论不能为空')
      }
      this.$http.post('api/postcomment/'+this.$route.params.id,{
        content:this.msg.trim()
      }).then(function(result){
        if(result.body.status===0){
          var cmt={
            user_name:'匿名',
            add_time:Date.now(),
            content:this.msg.trim()
          };
          this.comments.unshift(cmt);
          this.msg='';
        }
      })
    }
  },
  props: ["id"]
};
</script>
<style lang="scss">
.comment-container {
  h3 {
    font-size: 16px;
  }
  textarea {
    height: 85px;
    font-size: 14px;
    margin: 0;
  }
  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 12px;
    }
    .cmt-title {
      line-height: 30px;
      background-color: #ccc;
    }
    .cmt-body {
      line-height: 35px;
      text-indent: 2em;
    }
  }
}
</style>
